Page 215 - Schaum's Outline of Theory and Problems of Applied Physics
P. 215
200 FLUIDS AT REST [CHAP. 16
Answers to Supplementary Problems
16.1. The boat is more stable in freshwater because the buoyancy of the lead keel is less there.
16.2. The forces are the same.
16.3. The pressures are the same.
16.4. The person reduces the pressure in the straw by sucking on it, and atmospheric pressure on its surface then forces
the soda upward.
16.5. A ship is a hollow shell, so its average density is less than that of water. If the ship fills with water, its average density
increases until it is greater than that of water and the ship then sinks.
3
16.6. 19 g/cm ;19
16.7. 42,000 kg
16.8. (a) 7.8 (b) 0.128 m 3
16.9. 0.93
16.10. 0.565 N
16.11. 41.4 lb/in. 2
5
16.12. 6.37 × 10 Pa; 6.3 atm
16.13. (a) 0.16 N (b) An external pressure exerted on a fluid is transmitted uniformly throughout the fluid.
16.14. 15 cm
6
16.15. 1.11 × 10 Pa; 11.0 atm
16.16. 23.3 lb/in. 2
16.17. (a) 5539 N (b) 9800 N
16.18. 12.8 lb
16.19. 10,752 lb
16.20. 0.64 N
16.21. 1110 kg
16.22. (a) 12.5 N (b) 8 cm
16.23. (a) 7.5 kN (b) 125 strokes
16.24. (a) 7200 lb (b) 64 strokes
